Window-screen.



A. C. HERTZ.

WINDOW SCREEN.

APPLICATION FILED APR. I1. 1915.

Patented Aug. 28, 1917.

I 3 SHEETSSHEET 2- A. C. HERTZ.

WINDOW SCREEN.

APPLICATION FILED APR. 1!. 1916.

1,238,294.- Patented Aug. 28,1917.

3 SHEETS-,SHEET 3.

UNITED T TE FATE Q EQQv ALFRED C. HEBITZ, OF NEW YORK, N. Y.

WINDOW-SCREEN.

Application filed April 11, 1916.

1 b 07.? 1.074022.- iz may concern:

Be it known that I, ALFRED C. HER Z, a citizen of the United States, and a resident of New York, county and State of New York have invented certain new and useful Improvements in W indow-Screens, set forth in the following specification.

This invention relates to extensible window screens and particularly to those of the type having hinged screen doors.

The object of the invention is to improve the structure of a window screen having the functions of extensibility and providing for opening without removal. More specifically, an object of the invention is to provide a practical fly-seal between the frame proper and the top and bottom margins of the openable screen doors. A further object is to form the structure in an economical manner and at the same time to provide an automatic fly-seal between the screens of both the inner and the outer lapping doors. A further object of the invention is to combine telescoping sheet-metal cross-bars with wooden vertical frame-pieces to make use of the structural advantages of the said structural materials selectively.

The above and further objects of the invention will be clear from the following specification and claims which are directed to the illustrative embodiments of the invention shown in the accompanying drawings which form a part hereof, in which like characters designate corresponding parts and in which Figure 1 is a front elevation of an embodiment of the invention; Fig. 2 is a rear elevation of the structure shown in Fig. 1; Fig. 3 is a horizontal section with parts broken away and drawn to an enlarged scale, through line IIIIII of Fig. 2; Fig. 4 is a detail cross-section through line IVIV of Fig. 1; Fig. 5 is an enlarged fractional view looking toward the left of Fig. 4; Fig. 6 is a view similar to Fig. 5 but looking toward the right of Fig. 4; Fig. 7 is a vertical section looking toward the left through a right hand vertical frame-piece showing a modified structure; and Fig. 8 is a view similar to Fig. 7 showing another modified structure.

In the embodiment shown in Figs. 1 to 6 inclusive, a rectangular frame is formed by the pair of vertical frame-pieces A and a pair of telescoping cross-bars B cross-com necting the upper and lower ends of the Specification of Letters Patent.

Patented Aug. 28, 1917. Serial in). 90,322.

frame-pieces A. Each telescoping cross-bar B comprises two tubular sheet-metal structures, the outer structure 1 and the interiorly telescoping structure 2, the outer crosssection of 2 corresponding to the inner cross section of 1 so that a snug fit is insured. The cross-section of the twoparts of each crossbar B is shown best in Fig. 4:. At the outer margin the sheet-metal is folded to form a tube here shown substantially rectangular in crosssection with the folds of metal brought together so that the cross-sectionis substantially closed. From this tubular structure a vertical web comprising the outer part 5 and the inner part 6 extends toward the body of the screen. A rivet 7 may be secured to one of these web parts, it being shown sccured to the outer web part 5 to work in a slot 8 of limited longitudinal extent formed in the other web part so that the two parts of each cross-bar are locked together against over-extension. In this structure an outwardly extending troughlike channel 9 is formed by suitable folds in the sheet-metal so that the horizontal folds 11 and 12 form a ledge the purpose of which will later be described. From the ledge 1112 the metal of the cross-bar extends vertically toward the body of the screen to form a striker for the doors C and C, C being the inner door and C being the outer door. Each door comprises a substantially U shaped frame which may be of wood having the upright 20 and upper and lower legs 21 for the inner door 0 and similar parts 20 and 21 for the outer door 0. The screen 25 for the inner door is mounted to the outer faces of the frame 2021 so as to lie substantially in the plane of the outer surfaces of the frame while the screen 25 for the outer door is mounted on the inner faces of the frame 2021 so as to correspond substantially with the plane of the inner surfaces of this frame. This brings the two screens 25 and 25 both substantially in the same plane. Each free end of the lapping parts of each screen is finished with a bent sheet-metal terminal bead 26- for the inner screen and 26 for the outer screen. The vertical uprights 20 and 20 may be hinged by suitable hinges 27 directly to the vertical frame-pieces A and each are preferably formed out of two wooden slats 28 and 29 faced together while the legs 21 are of a thickness corresponding to the single slat 28 and have boundary planes corresponding to those of the slat 28. The legs 21 correspond as to limiting planes and thickness to the slat 29.

A flange 80 is secured or formed to con stitute a part of the marginal structure of the inner screen door 20. There are two of these flanges, one for the top leg 21 and one for the bottom leg 21. Each flange is coextensive in length with the leg 21 and extends across the overlapping leg 21 of the outer screen door into the trough 9 against the horizontal ledges 11 and 12 to form a fiytrap regardless of how far extended the screen may be.

In framing the structure together the vertical uprights A may be built up as a composite structure comprising a wooden bar 31, the wooden strip 32 and the sheet-metal folded strip 33, if desired. WVhen so constructed, the top and bottom ends of the metal strip 33 are suitably secured to the ends of the cross-bars B as by riveting, brazing, soldering, or the like. The trough 9 should be terminated just short of the wooden strip 32 as shown particularly well in Fig. 3.

In Fig. 7 a modified structure is illustrated in which the cross-bars B are substituted by the modified bars B. The vertical uprights A are also substituted by the vertical uprights A consisting of a single stiff piece of wood 35 to which the appro priate end 36 of a cross-bar part is directly screwed. The cross-bar comprises the same tubular structure 3 of closed cross-section as was present in the structure of Fig. 4:. It likewise has the slot and rivet 7 and 8 but in cross-section is shaped like a figure 9 superimposed on an inverted letter L to form the horizontal ledge 37 under which the inner and outer screens 0 and C swing and against which they fit to form a fly-seal without the necessity of a flange such as the flanges 30. In other respects the struc ture is the same as that shown in the previous figures.

In Fig. 8 the structure is the same as that shown in Fig. 7 except for the crosssection of the cross-bar B. This cross-bar structure, however, has the tube 3 formed by suitable folds of sheet-metal, the rivet and slot 78, but a ledge 87 instead of the ledge 37 to form a fly-seal by cooperating with the margins of the screen-doors.

If desired, the metal reinforcing 33 for the uprights A as shown in Fig. 3 may be omitted so that the uprights are similar to the uprights A in Figs. 7 and 8.

hat is claimed and what is desired to be secured by United States Letters Patent is 2- 1. In an extensible window screen having hinged screen-doors, vertical frame-pieces for the ends of the structure; a pair of two part telescoping sheet-metal cross-bars adjustably cross-connecting the upper and the lower ends of said vertical frame-pieces to complete an extensible rectangular frame; two overlapping screen-doors hinged respectively to said vertical frame-pieces; and a pair of horizontal flanges formed respectively on the top and bottom edges of the inner screen-door and extending forwardly across the top and bottom edges of the outer screen-door.

2. In an extensible window screen having hinged screen-doors, vertical frame-pieces for the ends of the structure; two overlapping screen-doors hinged respectively to said vertical frame-pieces; and a pair of telescoping sheet-metal cross-bars adjustably cross-connecting the upper and the lower ends of said vertical frame-pieces to com plete an extensible rectangular frame, each cross-bar having a horizontal fold cooperating with the upper and the lower marginal parts of the hinged screenwloors to complete the fly-seal for the various positions of extension.

3. In an extensible window screen having hinged screen-doors, vertical framepieces for the ends of the structure; two overlapping screen-doors hinged respectively to said vertical frame-pieces, the screen of the inner screen door being mounted substantially in the plane of the outer surface of the inner door frame and the screen of the outer door frame being mounted substantially in the plane of the inner surface of said outer door frame; and two pairs of telescoping sheet-metal cross-bars adjustably cross-connecting the upper and the lower ends of said vertical frame-pieces to complete an extensible rectangular frame, each cross-bar having a horizontal fold cooperating with the upper and the lower marginal parts of the hinged screen-doors to complete the fly-seal for the various positions of extension.

4. In an extensible window screen having hinged screen-doors vertical frame-pieces for the ends of the structure; a pair of overlapping screen doors hinged respectively to said vertical frame-pieces; and a pair of telescoping sheet-metal cross-bars adjust ably cross-connecting the upper and the lower ends of the said vertical frame-pieces to complete an extensible rectangular frame; a part of each cross bar of the pair of telescoping cross-bars comprising a tubular structure ofsubstantially closed cross-section, said cross-bars and the top and bottom rails of said hinged doors having mutually engaged parts relatively shaped and positioned to form fly-seals in horizontal planes.

ALFRED C. HERTZ.

Copies of this patent may be obtained. for five cents each. by addressing the Gommissioner of iatente. Washington, 13. G. 

